//
//  Animal.m
//  作业8
//
//  Created by dllo on 16/7/13.
//  Copyright © 2016年 YMJ. All rights reserved.
//

#import "Animal.h"

@implementation Animal
- (void)setFriends:(NSArray *)friends {
    if (friends == nil) {
        friends = [NSMutableArray array];
        return;
    }
    _friends = friends;
}
@end
